From mboxrd@z Thu Jan 1 00:00:00 1970 From: Will Deacon Subject: Re: [PATCH v7 5/9] ARM: Enable erratum 798181 for Broadcom Brahma-B15 Date: Wed, 26 Feb 2014 10:47:02 +0000 Message-ID: <20140226104702.GA8961@mudshark.cambridge.arm.com> References: <1393410552-21497-1-git-send-email-marc.ceeeee@gmail.com> <1393410552-21497-6-git-send-email-marc.ceeeee@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1393410552-21497-6-git-send-email-marc.ceeeee-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Marc Carino Cc: Christian Daudt , Arnd Bergmann , Olof Johansson , Florian Fainelli , Matt Porter , Russell King , "linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" , "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , Gregory Fong , "rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org" List-Id: devicetree@vger.kernel.org On Wed, Feb 26, 2014 at 10:29:08AM +0000, Marc Carino wrote: > From: Gregory Fong > > Broadcom Brahma-B15 (r0p0..r0p2) is also affected by Cortex-A15 > erratum 798181, so enable the workaround for Brahma-B15. Really... *exactly* the same erratum? That sounds pretty unlikely, so I'd really like to be sure that the workaround we have indeed solves your problem (issuing a dummy TLBI to 0x0 + dsb, then followed by a dmb + clrex on each core). The point is that the workaround doesn't simply perform non-shareable invalidation on each core using IPIs. /me counts the days until we need this code in arch/arm64. Will -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html